iOS Development with Swift

Getting started with swift and iOS development. My talk at MVP Mix 2015 in Dallas, Texas

Transcript

1. Starting iOS Development with Swift Venkat Palivela ThoughtWorks @venkatpalivela
2. Hi, my name is Venkat I’m a Senior Consultant at ThoughtWorks Developing Mobile Apps 2
3. Outline • What is Swift? • Swift Basics • Swift and Objc • Why native? 3
4. What is Swift?
5. What is Swift? 5 New Language for Apple Functional Object Oriented Statically Typed Type Inference
6. What does it all mean? 6 Top Down vs Bottom Up Object Oriented Programming is top down Functional Programming is bottom up Swift is both…
7. Language Constructs • Types and Type Inferencing • Optional Types • First class functions • Closures • Reactive Programming 7
8. Types 8 var  someString  =  “Hello  World!” let  someOtherString  =  “Hello  World!” var  someString:  String  =  “Hello  World!”   let  someOtherString:  String  =  “Hello  World!”
9. Optional Types 9 var  user:  User? var  userName  =  user?.fullName.uppercaseString var  postalCode  =  user?.address?.state?.uppercaseString
10. Functions & Closures 10 func  lessThanTen(number:  Int)  -­‐>  Bool  {          return  number  <  10   }   func  someOperation(  input:  Int,     success:  (result:  String)  -­‐>  Void,     failure:  (error:  NSError)  -­‐>  Void)  {   //  Do  some  async  operation   }
11. Code Demo! 11
12. Code Katas 12 • Prime Factors • Bowling • Mars Rover • Poker • Vending Machine • Conway’s Game of Life
13. Swift and Objc 13 Objective - C Runtime Swift Objective - C All Swift programs execute inside Objective-C runtime. As a result bridging between Swift and Objective -C is possible However, Swift only language constructs are not visible to Objective-C Bridging
14. Why Native? 14 http://martinfowler.com/articles/multiMobile/
15. Thanks! Venkat Palivela @venkatpalivela 15